Well drill jack



L. P. HANSEN.

WELL DRILL JACK.

APPLICATION FILED MAR. I, 1920.

1,407,654. Patented Feb. 21, 1922.

2 SHEETS-SHEET I w W/W L. P. HANSEN.

WELL DRILL JACK.

APPLICATION man MAR. '1. 1920.

1,407,654, 7 Patented Feb. 21, 1922 2 SHEETS-SHEET 2- LOUIS P. HANSEN, OF BURNS, KANSAS.

WELL DRILL JACK.

Specification of Letters Patent.

Patented Feb. 21, 1922.

To all: whom it may concern.

Be it known that 1, Louis 1 Hansen, a citizen of the United States of America, residing at Burns, in the county of Marion and State of Kansas have invented new and use- :l'ul Improvements in Well Drill Jacks, of which the following is a specification.

The object of the invention is to provide a simple and inexpensive apparatus whereby drilljars may be operated in drilling wells by a spudding method without the inconvenicnces and delays incident to the dis arrangement of the parts or elements of the more or less complicated mechanisms hereto fore employed in this connection and more especially to provide means whereby the shock upon the apparatus incident to the contact of the drill jars with the bottom of the hole or the release of the intermittently movable spudding element in the dropping of the jars, or in the release of the spudding cable to permit the fall of the jars, will be cushioned to insure a relative durability of the mechanism.

With these and related objects in View as will appear in the course of the following description, the invention consists in a construction and combination of parts of which a preferred embodiment is shown in the ac companying drawings, wherein:

Figure 1 is a side View of the apparatus showing the parts in the positions which they occupy just prior to the slacking of the spudding rope to permit the fall of the drill jars.

' Figure 2 is a vertical sectional view taken in the plane of the axis of the spudding shaft.

Figure 3 is an inner face view of the drum.

Figure 4 is a similar view of the spudding disk.

Figure 5 is an outer face view of the drum and the sprocket wheel by which motion is communicated to the tool-raising spool.

Upon a suitable stand or support 10 rising from a base or platform 11 is mounted a spudding shaft 12 carrying a spudding crank 13 equipped with a running pulley 14, while keyed upon the 'said shaft as by fitting the same upon a squared or cross-sectionally angular portion 15 thereof is a spudding disk 16 in cooperative relation with a drum 17 adapted to receive motion from a driving belt 18 movable in the operation of the apparatus in the direction indicated by the arrow in Figure 1. The spudding disk is preferably housed within an overhanging flange 19 of the drum and is provided with a tappet 20 consisting of a block or the equivalent thereof projecting into an arouate groove or equivalent guide or channel 21 in the face of the drum to the end that as the latter is rotated continuously by means of the driving belt or other equivalent power-translnitting means, the tappet will be periodically engaged by one end of the guide and advanced to communicate rotary motion from the drum to the spudding disk and thus to the shaft which carries the spudding arm or crank 13.

The drill cable consisting of a wire rope or its equivalent is indicated at 22 and ex tends over a drop pulley 23 supported by a suitable framework or derrick 24 also mounted upon the base or platform 11 and thence around the spudding pulley 14 and a direction pulley 25 to the spool 26 upon which the surplus length of the cable is reeled and from which it is paid out from time to time to permit of the gradual or periodic lowering of the tool as the drilling of the hole progresses. Said spool in the construction illustrated is provided with a worm gear 27 with which is engaged a worm 28 carried by a shaft 89 mounted at one end in a pivotal bearing box 40 and fitted at an intermediate point in interiorly accessible bearings 41, said shaft being provided with a suitable hand wheel 42. In the construction illustrated the bearing boxes 41 are provided with pivotal cap plates 43 to permit of the opening of the same to remove the worm shaft to disengage the worm from the gear 27 when the shaft may temporarily be fitted in a rest or seat 44 to permit of the rotation of the spool to draw the drill tools from the hole or well. In thus withdrawing the tools the cable should be disengaged from the spudding pulley 14 and allowed to assume the position indicated at 22 as shown in Figure 1 wherein it extends directly from the drop pulley 23 to the spool, and motion may be communicated to the spool for taking up the cable by means of a sprocket wheel 45 mounted upon the shaft 12 and having a friction clutch face 46 for engagement with a complemental clutch face 47 on the drum, said sprocket wheel being connected by a chain 48 with a sprocket wheel 49 on the spindle of the spool. Any suitable shifting means such as indicated at 50 may be employed to throw the sprocket wheel 45 into and out of engagement with the drum to permit of the withdrawing of the tools or the release of the same when the spudding operation is to be resumed.

In the operation of the mechanism the spudding disk receives an intermittent movement in the direction of rotation of the driving drum by reason of the engagement of the tappet elements consisting respectively of the block 20 on the spudding disk and the end wall 20 of the channel in the drum, such rotary movement of the spudding disk being continued to strain the spudding cable and thus raise the tools until the spudding crank reaches a point in its orbital movement which is slightly beyond that shown in Figure 1 when the strain on the cable due to the weight of the tools causes the crank to swing through approximately a semi-circular path to drop the tools, and as the tappet 20 reaches the limit of its movement vunder the influence of the weight of the drill jars it comes in contact with a cushioning spring 51 arranged in the channel 21 to relievethe strain upon the mechanisrn. The driving drum, however, continues its rotary movement in the same direction until the end wall 20 of the channel 21 again comes in contact with the tappet 2O whereupon the operation of raising the tools and subsequently releasing the same is repeated.

What is claimed is:

A spudding mechanism having a driving drum peripherally adapted for traverse by a belt and provided with a lateral recess overhung by the rim ofthe drum, a spudding disk housed in the recess of the drum and overhung by said rim thereof, and a spudding shaft upon which the drum is loosely mounted and to which said disk is fixed, said shaft being provided with a spudding crank, and said drum and disk being provided at their adjacent inner faces respectively inset from the periphery of the disk With an arcuate channel and a tappet for traversing the channel.

In testimony whereof he affixes his signature.

. LOUIS P. HANSEN. 

